1, excellent antibacterial performance, broad spectrum bactericidal, especially effective for Aspergillus, Penicillium, Trichoderma, etc..
2, according to special needs, specially dried and ground, become a powder system, easy to transport.
3, small particle size, good fluidity, easy dispersibility, easy processing.
4, does not contain heavy metals, less irritation to human body, product safety and environmental protection, no formaldehyde, in line with RoHS and other regulations.
5, good temperature resistance, UV resistance, high temperature resistance, acid and alkali resistance up to pH (2-14).
6, does not change the physical and chemical properties of the substrate.
Compared with benzoin ether, DMPA, DEAP and acylphosphine oxide photoinitiators, a-hydroxyalkylphenone photoinitiators have a longer excited triplet lifetime , and are easily affected by styrene. In the unsaturated polyester/styrene system, the photoinitiation efficiency of HM PP is not as good as that of traditional photoinitiators such as benzoin ether.
w-Aminoalkylphenones are a new class of highly active photoinitiators, which generally have strong electron-propelling groups at the para position of the benzene ring, such as methylmercapto, morpholino, etc. The most important of this series of photoinitiators is 2-methyl-1-(4-methylmercaptophenyl)-2-morpholine-1-propanone (MM MP, Irg a-cure 907, A max is 307nm) and 2-Phenyl-2-dimethylamino-1-(4-morpholinophenyl)-1-butanone (B DMP, Irg a cure 369, A max is 324nm), its structure is shown in formula (7-7) micronized ptfe wax Both have been successfully commercialized. Compared with the previous types of photoinitiators, although the photochemical kinetic parameters of this type of photoinitiators are not always beneficial to its photoinitiation activity, they still have high photoinitiation efficiency in most photocuring systems. , The maximum absorption wavelength is slightly increased or the absorbance is increased, and it is often combined with thioxanthone photosensitizer to further enhance the light absorption capacity. Due to these two characteristics, α-aminoalkylphenone photoinitiators show excellent photoinitiation performance when applied to pigment coloring systems . Therefore, these two photoinitiators are often recommended for added value. Higher light curing ink formulations.
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